---
id: CVE-2026-98218
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  i2c: atr: fix dangling adapter pointer on add failure

  i2c_atr_add_adapter() stores atr->adapter[chan_id] before
  i2c_add_adapter() so that the I2C bus notifier can matc…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  i2c: atr: fix dangling adapter pointer on add failure

  i2c_atr_add_adapter() stores atr->adapter[chan_id] before
  i2c_add_adapter() so that the I2C bus notifier can matc…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= a076a860acae77bbdcbd316541e5552e81fb1772 <
    2f5e42edbd232bf705dc5d3a91e06344237e63bb
  - >-
    Linux >= a076a860acae77bbdcbd316541e5552e81fb1772 <
    1093835f6aef58a831298d93e0d93f244fa07b84
  - >-
    Linux >= a076a860acae77bbdcbd316541e5552e81fb1772 <
    eabf7a3d33cd9fad106d267d00cc842434de8e02
  - >-
    Linux >= a076a860acae77bbdcbd316541e5552e81fb1772 <
    a57d9592714506556e30188af72dd3bdb9f647b5
  - >-
    Linux >= a076a860acae77bbdcbd316541e5552e81fb1772 <
    ad34235808b63a70ca4989b7a2852923193d06ef
  - Linux 6.6
published: '2026-10-06'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T09:18:08.590'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98218'
references:
  - url: 'https://git.kernel.org/stable/c/1093835f6aef58a831298d93e0d93f244fa07b84'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/2f5e42edbd232bf705dc5d3a91e06344237e63bb'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a57d9592714506556e30188af72dd3bdb9f647b5'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ad34235808b63a70ca4989b7a2852923193d06ef'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/eabf7a3d33cd9fad106d267d00cc842434de8e02'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-06T08:50:17.440Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

i2c: atr: fix dangling adapter pointer on add failure

i2c_atr_add_adapter() stores atr->adapter[chan_id] before
i2c_add_adapter() so that the I2C bus notifier can match child clients
during registration. On failure the channel is freed but the slot was
left pointing at freed memory, which can lead to use-after-free in
i2c_atr_del_adapter() / cleanup and also block reuse with -EEXIST.

Clear the slot on the i2c_add_adapter() error path before freeing chan.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.